Palace Code audit complete — everything passed.

**Summary:**
- Layout: correct HTML structure, split-panel CSS, Nav component, CodePage wrapper all present
- All API endpoints tested and working: `/threads`, `/session-tails`, `/linear-issues`, `/attach-thread` (GET+POST), `/update-thread`, `/delete-thread`, `/sync-linear`, `/chat`
- 74 Linear issues loading from tasks index
- No runtime bugs found
- No fixes needed